Installation equipment and installation method of automobile safety belt

Abstract

The invention provides mounting equipment and a mounting method for an automobile safety belt, and belongs to the technical field of production of automobile passive safety devices. According to the installation equipment for the automobile safety belt, through the design that the end head positioning part is installed on the folding mechanism, when the end head positioning part is matched with the tail end of the safety belt, the pin striking mechanism strikes out the belt pin, and the folding mechanism folds the tail end of the safety belt with the belt pin as the axis, and the step design based on the installation equipment, the problems that in the prior art, the installation process is complex in structure and low in cost are solved. The folding length of the belt tail and whether the belt pin is neglected to be installed are confirmed by an operator through manual visual inspection, and the error-proofing capability is poor; and the problem that a woven belt wrapping a belt pin is in interference fit with a cavity of a core shaft, so that an operator manually retracts a sewn belt tail into the core shaft of a retractor, and physical power is wasted is solved. The installation equipment comprises a fixing mechanism, a folding mechanism, a pin hitting mechanism, a sewing mechanism and a belt collecting mechanism, the folding mechanism is provided with an end positioning part, and the belt collecting mechanism is provided with a force detector.

Description

Technical Field

[0001] The present invention belongs to the technical field of the production of automotive passive safety devices, and particularly relates to an installation device and an installation method for an automotive seat belt. Background Art

[0002] The tail end of an automotive safety webbing is called a tape tail in the technical field of the production and installation of safety webbings. This tape tail needs to be folded and sewn to form a webbing hole for installing a tape pin. The safety webbing cooperates with the core shaft of a retractor through this tape pin to fix the tape tail inside the core shaft, thereby realizing the retracting and extending function of the retractor for this safety webbing. For the specific structure of the retractor, please refer to relevant literature. For example, a pre-tensioning two-stage force-limiting retractor and a seat belt device described in a Chinese invention patent with the authorization announcement number CN111114487B, a pawl-type pre-tensioning termination retractor described in a Chinese invention patent with the authorization announcement number CN113895393B, etc. are not elaborated here.

[0003] The existing equipment for installing the seat belt tape tail in the retractor core shaft mainly uses a sewing machine and some tooling. The specific operation steps are as follows:

[0004] S1: The operator manually passes the end of the safety webbing through the core shaft hole of the retractor.

[0005] S2: The operator visually confirms the folding position of the tape tail, manually folds the tape tail to overlap with the webbing, and pushes the tape tail into the pressing plate.

[0006] S3: Manually adjust the position of the tape tail, and then put a tape pin into the webbing hole formed by folding the tape tail.

[0007] S4: The operator pulls the webbing to tightly wrap the tape pin, and steps on the sewing machine pedal to drive the above-mentioned pressing plate to press down to tightly press the folded tape tail.

[0008] S5: Start the sewing machine for sewing. After sewing is completed, manually put the tape tail into the core shaft of the retractor.

[0009] S6: Visually check whether the tape pin is missing.

[0010] In the entire production and installation process of the above-mentioned existing technology, the operator manually visually confirms the folding length of the seat belt tail and whether the tape pin is missing, and the anti-error ability is poor; at the same time, because there is an interference fit between the webbing tightly wrapping the tape pin and the cavity of the core shaft, it is laborious for the operator to manually put the sewn tape tail into the core shaft of the retractor, and there may also be a situation where it cannot be completely put in. Summary of the Invention

[0011] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide an installation device and installation method for an automotive seat belt, which are used to solve the problems of the existing installation process. That is, relying on the operator to visually confirm the folding length of the belt tail and whether the belt pins are missed during installation, resulting in poor error prevention ability; and because there is an interference fit between the webbing that wraps the belt pins and the cavity of the spool, it is laborious for the operator to manually insert the sewn belt tail into the spool of the retractor.

[0012] To achieve the above and other related purposes, the present invention provides an installation device for an automotive seat belt, which is used to install the tail of the seat belt into the retractor, and includes: a fixing mechanism for fixing the retractor; a folding mechanism equipped with an end positioning part;

[0013] A pin punching mechanism. When the tail end of the seat belt cooperates with the end positioning part, the pin punching mechanism punches the belt pin in the width direction of the seat belt, and the folding mechanism folds the tail of the seat belt with the belt pin as the axis;

[0014] A sewing mechanism for sewing the folded tail of the seat belt. After sewing, the tail of the seat belt forms a belt hole, the belt pin is located in the belt hole, and the belt pin and the sewn tail of the seat belt form a belt tail;

[0015] A belt winding mechanism for winding the belt tail into the retractor and equipped with a force detector.

[0016] Optionally, the fixing mechanism includes:

[0017] A placement part for placing the retractor;

[0018] A clamping part for clamping the retractor on the placement part;

[0019] A pressing part for pressing the clamped retractor on the placement part.

[0020] Optionally, the folding mechanism includes:

[0021] A belt fixing part for placing the seat belt, and the end positioning part is located at one end of the belt fixing part;

[0022] A belt pressing part. When the tail end of the seat belt cooperates with the end positioning part, the belt pressing part presses the seat belt in the belt fixing part;

[0023] A lifting part for lifting and folding the seat belt pressed in the belt fixing part with the belt pin as the axis;

[0024] A horizontal pushing part for horizontally folding the lifted and folded seat belt with the belt pin as the axis;

[0025] The lifting part presses down the seat belt after horizontal overturning and folding until the folded seat belt is tightly attached.

[0026] Optionally, the belt fixing part includes:

[0027] A first belt fixing strip and a second belt fixing strip, a belt fixing groove is formed between the first belt fixing strip and the second belt fixing strip;

[0028] The seat belt is placed along the belt fixing groove, and the end positioning part is installed at the left end of the belt fixing groove;

[0029] The belt pin punched out by the pin punching mechanism is located above the seat belt.

[0030] Optionally, the pin punching mechanism includes:

[0031] A pin placing part for placing the belt pin;

[0032] A pin punching part for punching the belt pin in the pin placing part towards the width direction of the seat belt;

[0033] A pin limiting part for limiting the distance of the belt pin punched out by the pin punching part;

[0034] A limiting column, and the pin limiting part limits the distance of the belt pin punched out by the pin punching part by adjusting the limiting column.

[0035] Optionally, a pin hole is formed on the first belt fixing strip, and the pin punching part punches the belt pin into the belt fixing groove from the pin hole; a column hole is formed on the second belt fixing strip, and the position of the column hole is opposite to the position of the pin hole; the pin limiting part punches the limiting column into the belt fixing groove from the column hole.

[0036] Optionally, the end positioning part includes a guide plate, a baffle plate and an end sensor; the guide plate is installed at one end of the belt fixing part; the baffle plate is installed on the guide plate and its position is adjustable; the seat belt is placed in the belt fixing part and extends to the guide plate, and the end sensor detects whether the seat belt abuts against the baffle plate.

[0037] Optionally, the folding mechanism further includes an auxiliary horizontal pushing part for bringing the seat belt after lifting and folding close to the axis of the belt pin; a horizontal pushing part for horizontally overturning and folding the seat belt close to the axis of the belt pin with the belt pin as the axis.

[0038] Optionally, the belt retracting mechanism includes: a reel and a retracting motor; a belt opening is provided on the reel, the head end of the seat belt is wound around the reel through the belt opening, and the retracting motor drives the reel to rotate; the force detector detects the torque of the retracting motor.

[0039] An installation method of an installation device for an automotive seat belt as described above includes the following steps:

[0040] S1: Place a pin in the pin punching mechanism, pass the tail end of the seat belt through the core shaft of the retractor, and then place the retractor on the fixing mechanism.

[0041] S2: Pull the tail end of the seat belt into the folding mechanism until the tail end of the seat belt cooperates with the end positioning part.

[0042] S3: The fixing mechanism fixes the retractor, the pin punching mechanism punches the pin in the width direction of the seat belt, and the folding mechanism folds the tail of the seat belt with the pin as the axis.

[0043] S4: The sewing mechanism stitches the folded tail of the seat belt, and a hole is formed in the stitched tail of the seat belt. The pin is located in the hole, and the pin and the stitched tail of the seat belt form a belt tail.

[0044] S5: The belt take-up mechanism takes the belt tail into the core shaft of the retractor, and the force detector detects the magnitude of the force when the belt take-up mechanism takes up the belt, and judges whether the pin is installed qualified.

[0045] As described above, the installation device and installation method of an automotive seat belt of the present invention have at least the following beneficial effects:

[0046] 1. Compared with the prior art in which the operator visually confirms the folding length of the tail of the seat belt manually, in the installation device of this automotive seat belt, by installing an end positioning part on the folding mechanism, when the end positioning part cooperates with the tail end of the seat belt, the pin punching mechanism punches the pin, and the folding mechanism folds the tail of the seat belt with the pin as the axis, which can ensure the consistency of the folding size of the tail of the seat belt; compared with the prior art in which the operator manually puts the sewn belt tail into the retractor, because there is an interference fit between the webbing that wraps the pin and the cavity of the core shaft, it is more laborious to manually put the belt tail in, and this device is more labor-saving to put the belt tail into the retractor through the belt take-up mechanism; at the same time, the force detector installed on the belt take-up mechanism judges the installation condition of the pin according to the detected force when the belt take-up mechanism takes in the belt tail, avoiding the situation of missing installation of the pin.

[0047] 2. When the tail end of the seat belt and the end positioning part are matched, the fixing mechanism fixes the retractor. The pin punching mechanism punches a belt pin in the width direction of the seat belt. The folding mechanism folds the tail of the seat belt with the belt pin as the axis. Then, the sewing mechanism sews the folded tail of the seat belt. Finally, the belt take-up mechanism takes the belt tail into the core shaft of the retractor. The force detector detects the magnitude of the force when the belt take-up mechanism takes up the belt. Based on the steps of the installation device for the automotive seat belt described above, it solves the problems of the existing installation process, such as relying on the operator to visually confirm the folding length of the belt tail and whether the belt pin is missing, with poor error prevention ability; and because there is an interference fit between the webbing that wraps the belt pin and the cavity of the core shaft, it is laborious for the operator to manually put the sewn belt tail into the core shaft of the retractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It shows a schematic diagram of an installation device for an automotive seat belt according to the present invention.

[0049] Figure 2 It shows a schematic diagram of the fixing mechanism according to the present invention.

[0050] Figure 3 It shows a schematic diagram of the folding mechanism according to the present invention.

[0051] Figure 4 It shows a schematic diagram of the pin punching mechanism according to the present invention.

[0052] Figure 5 It shows a schematic diagram of the belt take-up mechanism according to the present invention.

[0053] Figure 6 It shows a flowchart of an installation method for an automotive seat belt according to the present invention.

[0054] DESCRIPTION OF REFERENCE NUMERALS

[0055] Retractor A, seat belt B, belt pin C, belt tail D;

[0056] Fixing mechanism 1, placing part 11, clamping part 12, pressing part 13;

[0057] Folding mechanism 2, end positioning part 21, guiding plate 211, baffle plate 212, belt fixing part 22, first belt fixing strip 221, second belt fixing strip 222, belt fixing groove 223, belt pressing part 23, lifting part 24, horizontal pushing part 25, auxiliary horizontal pushing part 26;

[0058] Pin punching mechanism 3, pin placing part 31, sensor 311, pin punching part 32, pin punching column 33, pin limiting part 34, limiting column 35;

[0059] Sewing mechanism 4;

[0060] The tape take-up mechanism 5, the tape reel 51, the tape opening 511, and the tape take-up motor 52. Detailed implementation manners

[0061] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0062] Please refer to Figures 1 to 6 . It should be noted that the structures, ratios, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" used in this specification are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention.

[0063] The following various embodiments are only for illustration. Combinations can be made between various embodiments, and it is not limited to the content shown in the following single embodiments.

[0064] Please refer to Figure 1 . The present invention provides an installation device for an automotive seat belt, which is used to install the tail of the seat belt B into the retractor A. The main difference between this device and the prior art lies in its structural design. The installation device includes:

[0065] As Figure 1 and Figure 2 shown, the fixing mechanism 1 is used to fix the retractor A. After the tail end of the seat belt B passes through the mandrel, the retractor A can be placed on the fixing mechanism 1. When performing the folding operation on the tail of the seat belt B or pulling the belt tail D later, the fixing mechanism 1 fixes the retractor A again. When it is not fixed, the operator can adjust the retractor A according to the on-site real-time situation.

[0066] As Figure 1 and Figure 3 shown, the folding mechanism 2 is used to automatically fold the tail of the seat belt B. The specific folding dimensions are controlled by the end positioning part 21 installed thereon.

[0067] As Figure 1 and Figure 4The pin punching mechanism 3 shown. When the tail end of the seat belt B cooperates with the end positioning part 21, the pin punching mechanism 3 punches out the pin C in the width direction of the seat belt B, and the folding mechanism 2 folds the tail of the seat belt B with the pin C as the axis; generally speaking, the punched pin C is located above the seat belt B, and the folding mechanism 2 folds the seat belt B upward with the pin C as the axis; compared with the designs in other directions, the stability of the upward folding mechanism 2 is better.

[0068] As Figure 1 The sewing mechanism 4 shown, which is used to sew the tail of the folded seat belt B. After sewing, the tail of the seat belt B forms a belt hole, and the pin C is located in the belt hole. The pin C and the sewn tail of the seat belt B form a belt tail D; the sewing mechanism 4 can be the same as the sewing mechanism 4 used in the prior art and can be directly transferred, or can be redesigned to adapt to the form of cooperation with other mechanisms.

[0069] As Figure 1 and Figure 5 The tape take-up mechanism 5 shown, which is used to take the belt tail D into the retractor A and is equipped with a force detector to detect the force when the tape take-up mechanism 5 takes in the belt tail D.

[0070] Compared with visually confirming the folding length of the tail of the seat belt B by the operator in the prior art, the installation device of the vehicle seat belt B, through the installation of the end positioning part 21 on the folding mechanism 2, when the end positioning part 21 cooperates with the tail end of the seat belt B, the pin punching mechanism 3 punches out the pin C, and the folding mechanism 2 folds the tail of the seat belt B with the pin C as the axis, can ensure the consistency of the folding size of the tail of the seat belt B; compared with the operator manually putting the sewn belt tail D into the retractor A in the prior art, because there is an interference fit between the webbing that wraps the pin C and the cavity of the core shaft, it is relatively laborious to manually put in the belt tail D. This device takes the belt tail D into the retractor A through the tape take-up mechanism 5 more labor-saving; at the same time, the force detector installed on the tape take-up mechanism 5 judges the installation condition of the pin C according to the detected force when the tape take-up mechanism 5 takes in the belt tail D, avoiding the situation of missing installation of the pin C.

[0071] In another embodiment, please refer to Figure 2 , the fixing mechanism 1 includes:

[0072] As Figure 2 and Figure 5 The placement part 11 shown, which is used to place the retractor A.

[0073] As Figure 2The clamping portion 12 shown is used to clamp the retractor A on the placement portion 11; the clamping portion 12 can be composed of clamping blocks in the front-to-back direction or the left-to-right direction, and the placement portion 11 is a slot formed between two clamping blocks. The distance between the two clamping blocks, that is, the width of the slot, is adjustable to accommodate retractors A of various sizes.

[0074] like Figure 2 and Figure 5 The pressing portion 13 shown is used to press the clamped retractor A onto the placement portion 11 , and cooperates with the clamping portion 12 to ensure that the retractor A can be firmly fixed.

[0075] In another embodiment, the folding mechanism 2 includes:

[0076] like Figure 3 The fixed belt portion 22 shown is used to place the safety belt B. The end positioning portion 21 is located at one end of the fixed belt portion 22. After the safety belt B passes through the core shaft in the retractor A on the fixing mechanism 1, the safety belt B is pulled onto the fixed belt portion 22.

[0077] like Figure 3 The belt pressing part 23 shown, when the tail end of the safety belt B cooperates with the end positioning part 21, the belt pressing part 23 presses the safety belt B tightly in the fixed belt part 22; the belt pressing part 23 can be controlled by a cylinder installed on the folding mechanism 2, or other power forms can be used, which will not be elaborated here.

[0078] like Figure 3 The lifting portion 24 shown will lift and fold the safety belt B pressed in the fixed belt portion 22 upward with the belt pin C as the axis. Because it is lifted and folded upward, the belt pin C driven out by the pinning mechanism 3 is above the safety belt B, so that the safety belt B that is folded upward can wrap the belt pin C therein.

[0079] like Figure 3 The horizontal pushing portion 25 shown will lift up and fold the safety belt B, and fold it horizontally with the belt pin C as the axis, completing the main action of folding the safety belt B; then the lifting portion 24 will press down the folded safety belt B horizontally until the folded safety belt B is tightly attached, completing the folding of the tail of the safety belt B, and the tail of the folded safety belt B and the belt pin C form a belt tail D.

[0080] The power devices of the lifting part 24 and the horizontal pushing part 25 can both adopt an electric cylinder structure to facilitate control, which will not be described in detail here.

[0081] In another embodiment, see Figure 3 and Figure 4, the belt - fixing part 22 includes a first belt - fixing strip 221 and a second belt - fixing strip 222, and a belt - fixing groove 223 is formed between the first belt - fixing strip 221 and the second belt - fixing strip 222; the safety belt B is placed along the belt - fixing groove 223, and the end - positioning part 21 is installed at the left end of the belt - fixing groove 223; the belt pin C ejected by the pin - punching mechanism 3 is located above the safety belt B; in this embodiment, a specific structural form of the belt - fixing part 22 is given. The distance between the first belt - fixing strip 221 and the second belt - fixing strip 222 can be adjusted to adapt to safety belts B with different width dimensions; the safety belt B is pulled along the belt - fixing groove 223 to the end - positioning part 21, and after the end - positioning part 21 fixes the tail end of the safety belt B, subsequent operations are carried out.

[0082] In another embodiment, the pin - punching mechanism 3 includes:

[0083] As Figure 4 shown in the pin - placing part 31 for placing the belt pin C. The pin - placing part 31 can be a pin - placing groove composed of two relatively - arranged iron blocks, and the distance between the two iron blocks can be adjusted to adapt to belt pins C of different sizes.

[0084] As Figure 4 shown in the pin - punching part 32 for punching the belt pin C in the pin - placing part 31 in the width direction of the safety belt B. The pin - punching part 32 is composed of an electric cylinder providing power and a pin - punching column 33 driven by the electric cylinder to eject the belt pin C out of the pin - placing part 31.

[0085] As Figure 4 shown in the pin - limiting part 34 and the limit post 35. The pin - limiting part 34 limits the distance of the belt pin C ejected by the pin - punching part 32 by adjusting the limit post 35. The pin - limiting part 34 is a power device, and an electric cylinder can also be selected for easy control; in combination with the first belt - fixing strip 221 and the second belt - fixing strip 222 in the previous embodiment, the structural form of the pin - punching mechanism 3 is further introduced. A pin hole is formed on the first belt - fixing strip 221, and the pin - punching part 32 punches the belt pin C into the belt - fixing groove 223 through the pin hole; a column hole is formed on the second belt - fixing strip 222, and the position of the column hole is opposite to the position of the pin hole; the pin - limiting part 34 punches the limit post 35 into the belt - fixing groove 223 through the column hole; more specific step descriptions will be introduced in the installation method below.

[0086] In another embodiment, please refer to Figure 3, the end positioning part 21 includes a guide plate 211, a baffle 212 and an end sensor; the guide plate 211 is installed at one end of the belt fixing part 22; the baffle 212 is installed on the guide plate 211 and its position is adjustable to enhance the adaptability of the positioning part; the safety belt B is placed in the belt fixing part 22 and extends onto the guide plate 211, and the end sensor detects whether the safety belt B abuts against the baffle 212. Only when the end sensor detects that the end of the safety belt B abuts against the baffle 212, subsequent work is carried out.

[0087] In another embodiment, please refer to Figure 3 , the folding mechanism 2 further includes an auxiliary transverse pushing part 26 for pressing the safety belt B after being lifted and folded close to the axis of the belt pin C; then the transverse pushing part 25 transversely folds the safety belt B close to the axis of the belt pin C with the belt pin C as the axis. Compared with directly transversely folding the safety belt B after being lifted and folded with the belt pin C as the axis by the transverse pushing part 25, the design of the auxiliary transverse pushing part 26 ensures the fitting of the belt pin C and the folded safety belt B, which is beneficial for the subsequent belt winding mechanism 5 to wind the belt tail D into the mandrel.

[0088] In another embodiment, please refer to Figure 5 , the belt winding mechanism 5 includes a belt winding wheel 51 and a belt winding motor 52; a belt opening 511 is provided on the belt winding wheel 51, and the head end of the safety belt B is wound around the belt winding wheel 51 through the belt opening 511. The belt winding motor 52 drives the belt winding wheel 51 to rotate, thereby pulling the safety belt B and winding the belt tail D into the mandrel; the force detector detects the torque of the belt winding motor 52 to judge whether the belt pin C is installed in place.

[0089] In other embodiments, as Figure 4 shown, a sensor 311 is installed at the pin placing part 31 to detect whether a belt pin C is placed at the pin placing part 31, so as to prevent the omission of installing the belt pin C from the beginning of the process.

[0090] Please refer to Figures 1 to 6 , based on the installation method of an installation device for an automotive safety belt B described above, includes the following steps:

[0091] S1: Place the belt pin C in the pin placing part 31, that is, a pin placing groove formed by two oppositely arranged iron blocks. The sensor 311 at the pin placing part 31 detects whether a belt pin C is placed at the pin placing part 31. After detecting a belt pin C, subsequent work is carried out. Otherwise, reinstall the belt pin C in the pin placing part 31; then pass the tail end of the safety belt B through the mandrel of the retractor A, and then place the retractor A on the placing part 11 of the fixing mechanism 1, that is, the groove formed between two clamping blocks.

[0092] S2: The operator manually pulls the tail end of the seat belt B into the belt slot 223 formed by the first fixed belt strip 221 and the second fixed belt strip 222. The seat belt B is placed along this belt slot 223. When the operator pulls the tail end of the seat belt B and slides it along the guide plate 211 to the baffle 212, and when the end sensor detects that the tail end of the seat belt B abuts against the baffle 212, the tail end of the seat belt B is fixed on the end positioning part 21; the belt pressing part 23 presses the seat belt B tightly in the belt slot 223.

[0093] S3: The clamping part 12 clamps the retractor A on the placing part 11, and then the pressing part 13 moves downward from top to bottom to press the retractor A; then, under the drive of the corresponding power device, the pin punching column 33 punches out the belt pin C from the pin placing part 31, that is, the pin placing slot. At this time, only half of the belt pin C is punched out, that is, one end of the belt pin C is punched out above the seat belt B; the other end of the belt pin C is still located in the pin hole of the first fixed belt strip 221. And the limit post 35 extends from the column hole of the second fixed belt strip 222 above the seat belt B under the drive of the pin limiting part 34. The limit post 35 abuts against the belt pin C; immediately afterwards, the lifting part 24 drives the guide plate 211, the baffle 212 and the seat belt B to move upward together, that is, the tail part of the seat belt B is axially folded upward with the belt pin C (including the limit post 35) as the axis; then, the auxiliary horizontal pushing part 26 moves the lifted and folded seat belt B close to the axis of the belt pin C (that is, the axis of the limit post 35). After that, the horizontal pushing part 25 horizontally folds the seat belt B with the belt pin C as the axis; thus, the folding of the tail part of the seat belt B is completed.

[0094] S4: The sewing mechanism 4 stitches the tail part of the folded seat belt B. After stitching, a belt hole is formed at the tail part of the seat belt B; at this time, the corresponding power device continues to drive the pin punching column 33 to completely punch out the belt pin C from the pin placing part 31, that is, the pin placing slot. At the same time, the pin limiting part 34 moves backward and no longer abuts against the limit pin. The limit pin retracts into the column hole, and the belt pin C leaves the pin hole of the first fixed belt strip 221 and is wrapped by the stitched tail part of the seat belt B. The belt pin C and the stitched tail part of the seat belt B form the belt tail D.

[0095] S5: The head end of the seat belt B is wound around the reel 51 through the belt opening 511 on the reel 51. The reel motor 52 is started to drive the reel 51 to rotate, thereby pulling the seat belt B and retracting the belt tail D into the mandrel; at the same time, the torque detector detects the torque of the reel motor 52 to judge whether the belt pin C is installed in place.

[0096] In summary, compared with the prior art where the operator visually confirms the folding length of the tail of the seat belt B manually, the installation device of the vehicle seat belt B is designed such that the end positioning part 21 is installed on the folding mechanism 2. When the end positioning part 21 cooperates with the tail end of the seat belt B, the pin punching mechanism 3 punches out the pin C with a belt, and the folding mechanism 2 folds the tail of the seat belt B with the pin C as the axis. This design can ensure the consistency of the folding size of the tail of the seat belt B. Compared with the prior art where the operator manually puts the sewn belt tail D into the retractor A, since there is an interference fit between the webbing that wraps tightly around the pin C and the cavity of the core shaft, it is quite laborious to manually put the belt tail D in. This device uses the belt retracting mechanism 5 to put the belt tail D into the retractor A more labor - saving. At the same time, the force detector installed on the belt retracting mechanism 5 judges the installation condition of the pin C according to the force detected when the belt retracting mechanism 5 retracts the belt tail D, avoiding the situation of missing installation of the pin C.

[0097] In this installation method, when the tail end of the seat belt B cooperates with the end positioning part 21, the fixing mechanism 1 fixes the retractor A. The pin punching mechanism 3 punches out the pin C with a belt in the width direction of the seat belt B. The folding mechanism 2 folds the tail of the seat belt B with the pin C as the axis. Then, the sewing mechanism 4 stitches the folded tail of the seat belt B. Finally, the belt retracting mechanism 5 puts the belt tail D into the core shaft of the retractor A. The force detector detects the magnitude of the force when the belt retracting mechanism 5 retracts the belt. Based on the steps designed for the above - mentioned installation device of the vehicle seat belt B, it solves the problems of the prior - art installation process, such as the poor anti - error ability of relying on the operator to visually confirm the folding length of the belt tail D and whether the pin C is missing, and the problem that because there is an interference fit between the webbing that wraps tightly around the pin C and the cavity of the core shaft, it is quite labor - intensive for the operator to manually put the sewn belt tail D into the core shaft of the retractor A.

[0098] Therefore, the present invention effectively overcomes the shortcomings in the prior art and has high industrial utilization value.

[0099] The above - mentioned embodiments merely illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above - mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A vehicle safety belt installation device, used to install the tail of the safety belt into a retractor, characterized in that: include: A fixing mechanism, used for fixing the retractor; The folding mechanism is equipped with an end positioning part; A pinning mechanism, when the tail end of the safety belt cooperates with the end positioning portion, the pinning mechanism drives out the belt pin in the width direction of the safety belt, and the folding mechanism folds the tail end of the safety belt with the belt pin as the axis; A sewing mechanism, used for sewing the folded tail of the safety belt, wherein the sewn tail of the safety belt forms a belt hole, the belt pin is located in the belt hole, and the belt pin and the sewn tail of the safety belt form a belt tail; The belt taking-up mechanism is used for collecting the belt tail into the retractor and is equipped with a force detector.

2. The vehicle safety belt installation device according to claim 1, characterized in that: The fixing mechanism comprises: A placement portion, used for placing the retractor; A clamping portion, used for clamping the retractor on the placement portion; The pressing portion is used to press the clamped retractor onto the placing portion.

3. The vehicle safety belt installation device according to claim 1, characterized in that: The folding mechanism comprises: The fixed belt part is used to place the safety belt, and the end positioning part is located at one end of the fixed belt part; A belt pressing part, which presses the safety belt tightly into the belt fixing part when the tail end of the safety belt cooperates with the end positioning part; The lifting part lifts and folds the safety belt pressed in the fixed belt part upwards with the belt pin as the axis; The horizontal pushing part is used to horizontally push and fold the safety belt after lifting and folding upwards with the belt pin as the axis; The lifting portion presses down the horizontally folded safety belt until the folded safety belt is tightly attached.

4. The vehicle safety belt installation device according to claim 3, characterized in that: The fixed belt portion comprises: a first fixed belt strip and a second fixed belt strip, wherein a fixed belt groove is formed between the first fixed belt strip and the second fixed belt strip; The safety belt is placed along the fixed belt groove, and the end positioning part is installed at the left end of the fixed belt groove; The belt pin driven out by the pin-driving mechanism is located above the safety belt.

5. The vehicle safety belt installation device according to claim 4, characterized in that: The cancellation mechanism comprises: A pin placement portion, used for placing the belt pin; A pin-driving portion, used to drive the belt pin in the pin-setting portion toward the width direction of the safety belt; The pin limiting part is used to limit the distance of the belt pin driven out by the pin driving part; The limiting pin part limits the distance of the belt pin driven out by the pin driving part by adjusting the limiting pin.

6. The vehicle safety belt installation device according to claim 5, characterized in that: The first fixed belt strip is provided with a pin hole, and the pin-driving unit drives the belt pin into the fixed belt groove through the pin hole; The second fixed belt strip is provided with a column hole, and the position of the column hole is opposite to the position of the pin hole; The limiting pin portion drives the limiting post from the post hole into the fixed belt groove.

7. The vehicle safety belt installation device according to claim 3, characterized in that: The end head positioning part includes a guide plate, a baffle plate and an end head sensor; The guide plate is mounted on one end of the fixed belt portion; the baffle is mounted on the guide plate and its position is adjustable; The safety belt is placed in the fixed belt portion and extends onto the guide plate, and the end sensor detects whether the safety belt and the baffle are against each other.

8. The vehicle safety belt installation device according to claim 3, characterized in that: The folding mechanism also includes an auxiliary horizontal pushing portion, which is used to bring the lifted and folded safety belt close to the axis of the belt pin; The horizontal pushing part horizontally pushes and folds the safety belt close to the axis of the belt pin with the belt pin as the axis.

9. The vehicle safety belt installation device according to claim 1, characterized in that: The belt taking-up mechanism comprises: Tape reel and tape motor; The belt reel is provided with a belt opening, the head end of the safety belt is passed through the belt opening and wrapped around the belt reel, and the belt reel motor drives the belt reel to rotate; The force detector detects the torque of the belt winding motor.

10. A method for installing a vehicle safety belt installation device according to any one of claims 1 to 9, characterized in that: The steps include: S1: Place the belt pin in the pinning mechanism, pass the tail end of the seat belt through the core shaft of the retractor, and then place the retractor on the fixing mechanism; S2: Pull the tail end of the seat belt into the folding mechanism until the tail end of the seat belt fits with the end positioning part; S3: The fixing mechanism fixes the retractor, the pinning mechanism drives the belt pin in the width direction of the seat belt, and the folding mechanism folds the tail of the seat belt with the belt pin as the axis; S4: The sewing mechanism sews the folded tail of the safety belt, and the tail of the sewn safety belt forms a belt hole, the belt pin is located in the belt hole, and the belt pin and the tail of the sewn safety belt form a belt tail; S5: The belt taking-up mechanism collects the belt tail into the core shaft of the reel, and the force detector detects the force of the belt taking-up mechanism when taking up the belt to determine whether the belt pin is installed properly.

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